Page 1: Table Of Contents
2011 DURAMAX Diesel Engine (LML/LGH) In Brief ......1-1 Driving and Operating ..9-1 Service and Maintenance .
Page 2 Canada, substitute the name this manual including, but not limited General Motors of Canada Limited A French language copy of this to, GM, the GM logo, CHEVROLET, for GMC and Chevrolet Motor manual can be obtained from your GMC, the CHEVROLET and GMC...
Page 3 Introduction Using this Supplement This supplement contains information specific to the unique components of the vehicle. It does not explain everything you need to know about the vehicle. Read this supplement along with the owner manual to learn about the vehicle's features and controls.
Page 4 Introduction NOTES...
Page 5: In Brief
In Brief In Brief Initial Drive Torque converter clutch operation will also be prevented when air or Information transmission oil temperatures are below certain levels. Initial Drive Information Transmission For areas where ambient Transmission ....1-1 temperatures are below 40 C Cold Operation Performance and Maintenance...
Page 6: Performance And Maintenance
In Brief Low Traction Mode When the transmission is in this Performance and (Allison Transmission) mode, upshifts may be delayed. Maintenance This is normal and does not indicate Low Traction Mode aids in vehicle an operational problem. acceleration on slippery road Engine Oil Life System surfaces such as ice or snow.
Page 7: Diesel Particulate Filter
In Brief To reset the Engine Oil Life System 3. Display the OIL LIFE temperature. This feature has been on most pickup models: REMAINING on the DIC. designed to operate automatically, If the display shows 100%, with limited operator involvement or 1.
Page 8 In Brief Special DPF Driver Messages See Diesel Particulate Filter Do Not Use Non-Highway Fuel (Exhaust Filter) on page 9 10 and Fuel labeled as off road or If the vehicle is used for numerous Engine Power Messages on non-highway is typically very short trips or extended slow-speed page 5 11.
Page 9: Diesel Exhaust Fluid
DEF can be purchased at a vehicle speed limitation. If there Chevrolet or GMC dealer. It can is an issue with the quality of the also be purchased at authorized fluid or the exhaust fluid system, vehicle and truck dealerships.
Page 10 In Brief NOTES...
Page 11: Instruments And Controls
Instruments and Controls Instruments and Information Displays Service Vehicle Messages . . . 5-12 Starting the Vehicle Driver Information Controls Messages ....5-12 Center (DIC) .
Page 12: Indicators
Instruments and Controls Warning Lights, Gauges, and Indicators Instrument Cluster English Pickup Shown, Metric Similar...
Page 13 Instruments and Controls English Van Shown, Metric Similar...
Page 14: Fuel Gauge
Instruments and Controls See the owner manual for telltales and gauges not listed in supplement. Fuel Gauge English Pickup Models English Van Models When the ignition is on, the fuel gauge shows approximately how much fuel the vehicle has left in the tank.
Page 15: Engine Oil Pressure Gauge
Instruments and Controls Listed are four situations customers Engine Oil Pressure may experience with the fuel gauge: Gauge At the gas station, the fuel pump shuts off before the gauge reads F (full). It takes a little more or less fuel to fill up than the fuel gauge indicated.
Page 16: Malfunction Indicator Lamp
Instruments and Controls Notice: Lack of proper engine oil Malfunction maintenance can damage the Indicator Lamp engine. The repairs would not be covered by the vehicle warranty. A computer system called OBD II Always follow the maintenance (On-Board Diagnostics-Second schedule for changing engine oil. Generation) monitors operation of the fuel, ignition, and emission The engine oil pressure gauge...
Page 17: Instruments And Controls
Instruments and Controls This light also comes on when the Notice: Modifications made The following can prevent more Diesel Exhaust Fluid (DEF) is not to the engine, transmission, serious damage to the vehicle: working. See Diesel Exhaust Fluid exhaust, intake, or fuel system Reduce vehicle speed.
Page 18 Instruments and Controls An emission system malfunction If one or more of these might be corrected by doing the conditions occurs, change the following: fuel brand used. It will require at least one full tank of the proper If the vehicle has been driven fuel to turn the light off.
Page 19: Wait-To-Start Light
Instruments and Controls normal driving. This can take The fast warm-up glow plug system See Diesel Exhaust Fluid Messages several days of routine driving. makes the wait to start light stay on on page 5 11 for information on the If this has been done and the for a shorter amount of time than specific message displaying with the...
Page 20: Information Displays
5-10 Instruments and Controls Information Displays life system will alert you to change Vehicle Messages your fuel filter on a schedule The Driver Information Center (DIC) consistent with your driving Driver Information will display warning messages if a conditions. Center (DIC) problem is detected.
Page 21: Messages
Instruments and Controls 5-11 Engine Cooling System Engine Oil Messages Fuel System Messages Messages ENGINE OIL LOW ADD OIL CHANGE FUEL FILTER COOLANT LEVEL LOW ADD If your vehicle has an oil level This message will appear on the COOLANT sensor, this message displays if DIC for 10 seconds when a fuel filter the oil level in the vehicle is low.
Page 22: Service Vehicle Messages
5-12 Instruments and Controls EXHAUST FLUID LOW SPEED Diesel Particulate Filter Service Vehicle Messages LIMITED SOON Messages SERVICE EXHAUST FLUID When the exhaust fluid range is less SYSTEM SEE OWNERS CLEANING EXHAUST FILTER than 120 km (75 miles) this message MANUAL NOW KEEP DRIVING UNTIL will be displayed.
Page 23: Transmission Messages
Instruments and Controls 5-13 If your vehicle has DIC buttons, this If your vehicle has DIC buttons, this Transmission Messages message will not be displayed. The message will not be displayed. The SHIFT INHIBITED SELECT N Elevated Idle can be turned on or Elevated Idle can be turned on or off using the customization menus.
Page 24: Vehicle Personalization
5-14 Instruments and Controls 7 KM/H (4 MPH) MAX SPEED SPEED LIMITED Vehicle NEXT FUEL FILL TO 7 KM/H (4 MPH) Personalization This message will be displayed This message will be displayed Your Duramax Diesel vehicle may along with other messages. These along with other messages.
Page 25 Instruments and Controls 5-15 Feature Settings Menu Items PTO SET 1 SPEED PTO SET 2 SPEED This feature allows you to select the This feature allows you to select the PTO STANDBY SPEED PTO 1 set speed. PTO 2 set speed. This feature allows you to select the Press the customization button until Press the customization button until...
Page 26 5-16 Instruments and Controls PTO TAP STEP PTO SHUTDOWN TIME This feature allows you to select the This feature allows you to select the PTO tap step. PTO shutdown time. Press the customization button until Press the customization button until the PTO TAP STEP screen appears the PTO SHUTDOWN TIME screen on the DIC display.
Page 27: Driving And Operating
Driving and Operating Driving and Fuel Starting and Fuel for Diesel Engines ..9-16 Operating Operating What Fuel to Use in The U.S....9-17 Starting the Diesel What Fuel to Use in Canada and Mexico .
Page 28 Driving and Operating 2. As soon as the wait to start light When the engine is cold, let it run If you experience longer cranking goes off, immediately turn the for a few minutes before you move times, notice an unusual amount ignition key to START.
Page 29 Driving and Operating If the light comes on and then goes This feature can be turned on or off WARNING off and you know the batteries are using the DIC buttons. If the vehicle charged, but the engine still will not is not equipped with DIC buttons, do Do not use gasoline or starting start, the vehicle needs service.
Page 30 Driving and Operating The engine idle speed will return to Once these inputs are removed, the Fast Idle control will be disabled normal once the following conditions engine idle speed will slowly ramp when one or more of the following are met: back up to high idle after the normal conditions occur:...
Page 31: Winter Cover
Driving and Operating Keep the underside of the winter Winter Cover The following usage guidelines will cover as clean as possible at all allow adequate airflow for proper If the vehicle includes a winter times. Remove monthly or as radiator and air cooler performance: cover, it can be used to enhance necessary and clean away dust Do not use the winter cover if...
Page 32 Driving and Operating Installation (Chevrolet Pickup) Open the hood. A. Slide the channels of the cover down the back edge of the grille on both sides. B. Hook J-clips to the bottom of C. Hook J-clips on to the top edge the grille.
Page 33 Driving and Operating D. Hook J-clips to the side edge of the grille. E. To remove the winter cover, reverse the steps listed previously. Installation (GMC Pickup) Open the hood. A. Slide the channels of the cover down the back edge of the grille on both sides.
Page 34 Driving and Operating D. To remove the winter cover, reverse the steps listed previously. Installation (Van Models) Open the hood and secure it with the prop rod. A. Hook the 5 J clips on to the B. Hook the top center J clip by bottom edge of the grille.
Page 35: Engine Heater
Driving and Operating C. Attach the metal hooks, one 3. Plug it into a normal, grounded The length of time the heater should each at the top corners. 110-volt AC outlet. remain plugged in depends on the outside temperature. You may wish D.
Page 36: Fuel Operated Heater (Foh) (Van Models Only)
9-10 Driving and Operating Fuel Operated Heater The FOH will turn on if all of the Engine Exhaust following conditions exist: (FOH) (Van Models Only) Outside air temperature is below Diesel Particulate Filter or equal to 4°C (39° F). (Exhaust Filter) Fuel level is greater or equal to The vehicle has a Diesel Particulate 12.5 percent of the total fuel tank...
Page 37 Driving and Operating 9-11 The DPF will clean itself as part of For the filter to clean itself, the Extended idle should be normal operation. Several factors vehicle must be driven above avoided because the DPF system including fuel consumed, hours of 50 km/h (30 mph) until the is not capable of self cleaning engine operation and miles driven...
Page 38: Diesel Exhaust Fluid
DEF can be purchased at a Diesel Exhaust Fluid (DEF) is become very hot. Keep the exhaust Chevrolet or GMC dealer. It can corrosive. Do not allow it to area clear of material that could also be purchased at authorized come in contact with your skin, ignite or burn.
Page 39 Driving and Operating 9-13 Filling the DEF Tank Use only exhaust fluid that is GM approved, or fluid containing the API certified or ISO 22241 label. The use of other fluids could damage the system, requiring costly repairs that will not be covered by the vehicle warranty.
Page 40 9-14 Driving and Operating Exhaust Fluid Low Warnings stopped for the EXHAUST FLUID MAX SPEED UPON RESTART EMPTY message to clear. If the will be displayed. There will also A full DEF tank will last for vehicle is driven prior to the DIC be a warning light and chime.
Page 41: Exhaust Brake
Driving and Operating 9-15 All DEF has an expiration date. Service Exhaust Fluid System Brakes If the system detects poor quality, If a problem occurs with the DEF contaminated or diluted DEF, the system, the DIC will display Exhaust Brake (Pickup DIC will display EXHAUST FLUID SERVICE EXHAUST FLUID Models only)
Page 42: Fuel For Diesel Engines
9-16 Driving and Operating brakes are applied, and the rate Fuel the vehicle is slowing. The system delivers the correct amount of Fuel for Diesel Engines braking to assist in vehicle control. The heavier the vehicle load, the Some states and provinces have more active the engine exhaust restrictions on the purchase of brake will be.
Page 43: What Fuel To Use In
Driving and Operating 9-17 We do not test aftermarket If you run out of fuel, Running Out of diesel fuel additives. Some Fuel on page 9 30 tells you how to additives, particularly those restart the engine. which contain alcohol or water emulsifiers, could What Fuel to Use in damage the fuel system.
Page 44 9-18 Driving and Operating Diesel Fuel Grades Biodiesel Biodiesel blends For best results use No. 2 D diesel It is acceptable to use diesel fuel What is biodiesel? fuel year-round (above and below containing up to 20% biodiesel Biodiesel is a fuel produced from freezing conditions) as oil (B20).
Page 45 Driving and Operating 9-19 Do not use blends specification D7467 (Biodiesel containing more than blend, B6 B20). Biodiesel 20% biodiesel. Any engine, is an emerging product, and fuel system, or exhaust its quality can vary widely. To after-treatment system damage reduce the risk of poor quality caused by the use of such blends fuel, we recommend that...
Page 46 9-20 Driving and Operating However, biodiesel has unique should be run out of biodiesel to Use of biodiesel blends greater properties and needs to be handled below 1/4 tank, refueled with than B5 (5% blend) should be differently than diesel fuel. Its use conventional Ultra Low Sulfur avoided in cold temperatures.
Page 47 Driving and Operating 9-21 Use of biodiesel blends will Accidental Refueling with WARNING degrade the performance of Gasoline your vehicle s water separator. If you accidentally refuel with Heat coming from the engine can Biodiesel reduces the gasoline, your vehicle will run very cause the fuel to expand and effectiveness of the vehicle s rough, will produce smoke, and will...
Page 48: What Fuel To Use In Canada
9-22 Driving and Operating What Fuel to Use in Diesel Fuel Types Biodiesel Canada and Mexico Canadian fuels are blended for What is biodiesel? seasonal changes. Diesel Type A The emission control system Biodiesel is a fuel produced from fuel is blended for better cold requires the use of diesel fuel with vegetable oils or animal fats that weather starting in extreme...
Page 49 Driving and Operating 9-23 Biodiesel blends Certain driving More frequent refueling provides patterns are not compatible the best opportunity to have a It is acceptable to use diesel fuel with biodiesel use. It is the supply of fresh fuel. containing up to 20% biodiesel operator s responsibility to (B20).
Page 50 9-24 Driving and Operating Your vehicle is equipped with a With long term use of What Fuel to Use in Mexico fuel heating system to provide a conventional diesel fuel, gum Use of diesel fuel other level of protection against filter and varnish may be deposited than Ultra Low Sulfur Diesel plugging from gelling (waxing)
Page 51: Cold Weather Operation
Driving and Operating 9-25 Accidental Refueling with Cold Weather Operation WARNING Gasoline Follow the instructions listed If you accidentally refuel with Heat coming from the engine can previously under the heading gasoline, your vehicle will run very cause the fuel to expand and What Fuel to Use.
Page 52: Water In Fuel
9-26 Driving and Operating Water in Fuel If the fuel tank needs to be Water in Fuel Light Chart purged to remove water, see your If the WATER IN FUEL SERVICE dealer or a qualified technician. WARNING REQUIRED message comes on, Improper purging can damage the use this chart.
Page 53 Driving and Operating 9-27 Driving when this the primary and secondary fuel Recommended warning indicator is on, can filters are located in the chassis Problem Action damage the fuel injection system (inside frame rail) compartment. Drain fuel filter and the engine. If the indicator They are on the driver side of immediately.
Page 54 9-28 Driving and Operating The fuel lines were removed or the fuel system. If air has disconnected for servicing. entered the fuel system the fuel system will need to be primed. The fuel filter water drain valve For van models, start the engine was opened while the engine and let it run for a few minutes.
Page 55 Driving and Operating 9-29 To Prime the Vehicle (Pickup 5. Open the fuel filter vent To Prime the Vehicle (Van Models) Models) valve by turning the screw The vehicle has an electric counterclockwise several full The vehicle is equipped with a priming pump.
Page 56: Running Out Of Fuel
9-30 Driving and Operating 5. If the engine does not run after To Prime the Fuel Operated Heater 2. Follow the fuel priming repeating Steps 2 and 3 three (FOH) Fuel Lines (Van Models) procedure earlier in this section times, turn the ignition key to prime the fuel filter.
Page 57: Fuel Filter Replacement
Driving and Operating 9-31 2. Follow the vehicle fuel system Fuel Filter Replacement The fuel filter is located in the priming procedure earlier in this engine compartment on the Pickup Models section to re prime the system passenger side of the vehicle. and re start the engine.
Page 58 9-32 Driving and Operating 5. Install the new filter element. If you want to change the fuel filter Primary Filter (A) yourself, here's how to do it: 6. Reinstall and tighten the filter 1. Apply the parking brake. container and reconnect the WARNING water sensor wire to the filter.
Page 59: Filling The Tank
Driving and Operating 9-33 6. Follow the vehicle fuel system Filling the Tank priming procedure earlier in this section to re prime the system. WARNING 7. Start the engine and let it idle for Fuel vapor burns violently and a five minutes.
Page 60: Filling A Portable Fuel
9-34 Driving and Operating To remove the fuel cap, turn it Filling a Portable Fuel WARNING slowly to the left (counterclockwise). Container If a fire starts while you are WARNING refueling, do not remove the WARNING nozzle. Shut off the flow of fuel Fuel can spray out on you if you Never fill a portable fuel container by shutting off the pump or by...
Page 61: Trailer Towing
Driving and Operating 9-35 Towing To avoid this, let the engine run WARNING (Continued) while parked (preferably on level ground) with the transmission in Trailer Towing Bring the fill nozzle in contact P (Park) and the park brake applied with the inside of the fill for at least five minutes before When towing at high elevation on opening before operating the...
Page 62 9-36 Driving and Operating Vehicle Axle Ratio Max. Trailer Wt. GCWR** C-2500 Pickup Models 2WD* Pickup Model Extended Cab Standard Box 3.73 7 938 kg (17,500 lbs) 11 113 kg (24,500 lbs) Pickup Model Crew Cab Standard Box 3.73 7 893 kg (17,400 lbs) 11 113 kg (24,500 lbs) Pickup Model Sierra Denali 3.73...
Page 63 Driving and Operating 9-37 Vehicle Axle Ratio Max. Trailer Wt. GCWR** C-3500 Pickup Model Extended Cab 2WD* Single Rear Wheels 3.73 7 847 kg (17,300 lbs) 11 113 kg (24,500 lbs) Dual Rear Wheels 3.73 9 752 kg (21,500 lbs) 13 245 kg (29,200 lbs) C-3500 Pickup Model Crew Cab Standard Box 2WD*...
Page 64 9-38 Driving and Operating Vehicle Axle Ratio Max. Trailer Wt. GCWR** K-3500 Pickup Model Extended Cab 4WD* Single Rear Wheels 3.73 7 666 kg (16,900 lbs) 11 113 kg (24,500 lbs) Dual Rear Wheels 3.73 9 662 kg (21,300 lbs) 13 245 kg (29,200 lbs) K-3500 Pickup Model Crew Cab Standard Box 4WD*...
Page 65: Conversions And Add-Ons
Driving and Operating 9-39 Vehicle Axle Ratio Max. Trailer Wt. GCWR** G3500 Passenger Van Short Wheelbase 3.54 4 536 kg (9,900 lbs) 7 711 kg (17,000 lbs) G3500 Passenger Van Long Wheelbase 3.54 4 536 kg (9,700 lbs) 7 711 kg (17,000 lbs) *Fifth-wheel or gooseneck kingpin weight should be 15 percent to 25 percent of trailer weight up to 1 587 kg (3,500 lbs) maximum.
Page 66 9-40 Driving and Operating The PTO stationary mode provides PTO Enabling/Disabling both in cab and remote controls. Conditions The in cab controls are enabled Enabling as the factory preset. The remote Conditions Stationary PTO controls are disabled. This factory preset configuration can be To engage stationary PTO programmed to enable the remote operation, the following conditions...
Page 67 Driving and Operating 9-41 For in-cab PTO operation: These switches are accessed Press and release the position through the PTO upfitter connector, on the PTO switch. The PTO Press and release the position on located under the passenger LED light will blink fast until the the PTO switch.
Page 68 9-42 Driving and Operating PTO: RELEASE BRAKE speed to the stored PTO set The mobile PTO mode will also speed. PTO can also be disengage if the following conditions PTO: REDUCE VEHICLE programmed to reengage at are detected by the vehicle SPEED PTO standby speed upon electronics:...
Page 69 Driving and Operating 9-43 The stationary PTO mode will also The PTO standby engine speed can Maximum PTO Operating Speed: disengage if any of the following be reprogrammed to a higher speed During PTO operation, the conditions are detected by the by your dealer.
Page 70 9-44 Driving and Operating Engine speed selection is variable PTO Switch Operation engagement of PTO. The initial between base engine idle speed stand by speed adjustment must be The In-cab PTO Switch has four and a maximum of 3100 rpm between engine base idle speed positions: , , /SET, and +/RES.
Page 71 Driving and Operating 9-45 TAP-DOWN: Press and release TAP-UP: Press and release The remote start function is initiated the /SET switch position on the the +/RES position to increase by a sequence of switch actions, PTO switch to reduce the engine the engine speed by increments in addition to several vehicle speed by increments of 100 rpm.
Page 72 9-46 Driving and Operating Timed auto-engine shutdown: Once the above conditions are met, 3. The PTO system will raise The timed auto-engine shutdown continue the remote start by doing engine rpm to standby speed feature provides the means the following steps using the remote and engage the PTO load.
Page 73 Driving and Operating 9-47 Prolonged or Extended PTO The ENGINE POWER IS Factory Preset Parameters REDUCED Driver Information Operation The following table lists the factory Center (DIC) message and preset parameters. These may be While operating the vehicle in Malfunction Indicator Lamp will be altered by the service technician to stationary PTO mode, the Diesel displayed, and dealer service will...
Page 74 9-48 Driving and Operating Programmable Factory Setting Minimum Value Maximum Value Parameters PTO In-cab Control ENABLED DISABLED ENABLED PTO Remote Control DISABLED DISABLED ENABLED Type of Set Switch MOMENTARY MOMENTARY LATCHING Operation Press ON then go to DISABLED DISABLED ENABLED Set 1 Speed Remote Engine Start DISABLED...
Page 75 Driving and Operating 9-49 Programmable Factory Setting Minimum Value Maximum Value Parameters Engine Shutdown warning DISABLED DISABLED ENABLED Set Low Fuel level for Engine Shutdown Engine Run Time While 7 Hours 4 minutes 7 hours PTO is Active Timer Min. PTO Engage Speed 500 RPM 500 RPM 1800 RPM...
Page 76 9-50 Driving and Operating Programmable Factory Setting Minimum Value Maximum Value Parameters Maximum Vehicle Speed 129 km/h (80 mph) 30 km/h (18 mph) 129 km/h (80 mph) Minimum Remote 0.25 V 0.0 V 2.5 V Accelerator Voltage Maximum Remote 4.75 V 2.5 V 5.0 V Accelerator Voltage...
Page 77: Vehicle Checks
Vehicle Care 10-1 Vehicle Care Engine Overheating ..10-25 General Information Starter Switch Check ..10-26 Automatic Transmission Shift Accessories and Lock Control Function General Information Modifications Check .
Page 78: Vehicle Care
10-2 Vehicle Care Damage to vehicle components GM Accessories are designed to Aftermarket Engine resulting from modifications or complement and function with other Performance Enhancement the installation or use of non GM systems on the vehicle. Your GM Products and Modifications certified parts, including control dealer can accessorize the vehicle Some aftermarket engine...
Page 79 Vehicle Care 10-3 You should be aware that these Engine power enhancement Damage, failure, or reduced life of products could have harmful effects products may enable the engine to the engine, transmission, emission on the performance and life of the operate at horsepower and torque system, drivetrain, or other vehicle engine, exhaust emission system,...
Page 80: Vehicle Checks
10-4 Vehicle Care Vehicle Checks Engine Compartment Overview United States Pickup models Shown, Canada Similar...
Page 81 Vehicle Care 10-5 A. Coolant Surge Tank and Engine Air Cleaner/Filter K. Power Steering Fluid Reservoir Pressure Cap Restriction Indicator Brake Fluid Reservoir (If Equipped) B. Remote Positive (+) Terminal M. Auxiliary Battery G. Engine Oil Dipstick C. Battery N. Underhood Fuse Block H.
Page 82 10-6 Vehicle Care United States Van models Shown, Canada Similar...
Page 83: Engine Oil
Vehicle Care 10-7 A. Battery Engine Oil Checking Engine Oil B. Coolant Surge Tank and It is a good idea to check the To ensure proper engine Pressure Cap engine oil level at each fuel fill. In performance and long life, careful order to get an accurate reading, attention must be paid to engine C.
Page 84 10-8 Vehicle Care When to Add Engine Oil area that shows the proper operating range, the engine could be damaged. You should drain out the excess oil or limit driving of the vehicle and seek a service professional to remove the excess amount of oil.
Page 85 Vehicle Care 10-9 SAE 5W-40 to improve cold Look for this on the oil container, What to Do with Used Oil starting. These numbers and use only those oils that display Used engine oil contains certain on the oil container show its this logo.
Page 86: Engine Oil Life System
10-10 Vehicle Care Engine Oil Life System change is not necessary for up to a To reset the Engine Oil Life System year. The engine oil and filter must on van models: When to Change Engine Oil be changed at least once a year 1.
Page 87: Automatic Transmission
Vehicle Care 10-11 On all models, the Engine Oil Life Automatic Transmission Notice: Too much or too System can be reset as follows: little fluid can damage the Fluid transmission. Too much can 1. Turn the ignition to ON/RUN with mean that some of the fluid could When to Check and Change the engine off...
Page 88 10-12 Vehicle Care Checking the Fluid Level COLD CHECK band if the 5. Perform a hot check at the transmission fluid is below normal first opportunity after the normal Prepare the vehicle as follows: operating temperatures. operating temperature of 71°C Park the vehicle on a level (160°F) to 93°C (200°F) is 1.
Page 89 Vehicle Care 10-13 4. Safe operating level is within the How to Add Fluid Notice: Use of the incorrect HOT RUN band on the dipstick. automatic transmission fluid In cold operation, Allison The width of the HOT RUN may damage the vehicle, and the recommends using Synthetic band represents approximately damages may not be covered by...
Page 90 10-14 Vehicle Care In heavy traffic especially in How to Check Checking the fluid hot will give you hot weather. a more accurate reading of the fluid Because this operation can be a level. While pulling a trailer. little difficult, the decision may be made to have this done at the Checking the Fluid Level To get the right reading, the fluid...
Page 91 Vehicle Care 10-15 Then, without shutting off the What Transmission engine, follow these steps: Fluid to Use (Allison Transmission Only) Cold Operation When temperatures are very cold, the transmission will prevent certain Check both sides of the dipstick, operations to protect against and read the lower level.
Page 92 10-16 Vehicle Care Transmission shifting might be B. For areas where ambient It does not take much fluid, firmer with a cold transmission. This temperatures fall below 40°C generally less than 0.5 L (1 pint). difference in shift quality is normal. ( 40°F), synthetic transmission Do not overfill.
Page 93: Engine Air Cleaner/Filter
Vehicle Care 10-17 Engine Air Cleaner/Filter When to Inspect To inspect and replace the filter and reset the restriction indicator: Inspect the air cleaner/filter every Pickup Models 25 000 km (15,000 miles) and replace the filter if necessary. How to Inspect When the restriction indicator turns black, or is in the red/orange change zone, replace the filter and...
Page 94 10-18 Vehicle Care 3. Remove the two air cleaner 10. Reset the air cleaner/filter Van Models housing cover screws (D). restriction indicator (C), if equipped, by pressing the 4. Raise the air cleaner housing top button on the indicator. cover and remove the air cleaner/filter from the air cleaner See Scheduled Maintenance on housing.
Page 95 Vehicle Care 10-19 How to Inspect 2. Remove the air cleaner/filter WARNING from the housing. Care should When the restriction indicator is be taken to dislodge as little dirt in the red/orange change zone, Operating the engine with the air as possible.
Page 96: Cooling System
10-20 Vehicle Care Cooling System Van Models WARNING The cooling system allows the Heater and radiator hoses, and engine to maintain the correct other engine parts, can be very working temperature. hot. Do not touch them. If you do, Pickup Models you can be burned.
Page 97: Engine Coolant
Vehicle Care 10-21 Notice: Using coolant other than The following explains the cooling Notice: Using coolant other than ® DEX-COOL can cause premature system and how to add coolant DEX-COOL may cause premature engine, heater core, or radiator when it is low. If there is a problem engine, heater core, radiator and corrosion.
Page 98 10-22 Vehicle Care What to Use Notice: If an improper coolant Have the coolant changed by an mixture is used, the engine could authorized service center, familiar Use a 50/50 mixture of clean, overheat and be badly damaged. with legal requirements regarding drinkable water and DEX-COOL The repair cost would not be used coolant disposal.
Page 99 Vehicle Care 10-23 Checking Coolant (Van Models) WARNING WARNING Turning the surge tank pressure Turning the surge tank pressure cap when the engine and radiator cap when the engine and radiator are hot can allow steam and are hot can allow steam and scalding liquids to blow out and scalding liquids to blow out and burn you badly.
Page 100 10-24 Vehicle Care Adding Coolant (Pickup and Van Turn the pressure cap slowly WARNING Models) counterclockwise about one full turn. If a hiss is heard, wait for If more coolant is needed, add the Steam and scalding liquids from a that to stop.
Page 101: Engine Overheating
Vehicle Care 10-25 5. Replace the pressure cap. If Steam Is Coming from the Notice: If the engine catches fire Be sure the pressure cap is because of being driven with no Engine Compartment hand-tight and fully seated. coolant, the vehicle can be badly damaged.
Page 102: Starter Switch Check
10-26 Vehicle Care Tows a trailer. See Driving on If there is still no sign of steam and 2. Firmly apply both the parking Grades in the Index of the the vehicle is equipped with an brake and the regular brake. vehicle's owner manual engine driven cooling fan, push See Parking Brake in the...
Page 103: Automatic Transmission Shift Lock Control Function
Vehicle Care 10-27 Automatic Transmission 3. With the engine off, turn the Park Brake and P (Park) ignition to ON/RUN, but do Shift Lock Control Mechanism Check not start the engine. Without Function Check applying the regular brake, try WARNING to move the shift lever out of P (Park) with normal effort.
Page 104: Electrical System
10-28 Vehicle Care To check the P (Park) Electrical System mechanism's holding ability: With the engine running, shift Engine Compartment Fuse Block to P (Park). Then release the parking brake followed by the regular brake. Contact your dealer if service is required.
Page 105 Vehicle Care 10-29 To remove fuses, hold the end of Fuses Usage Fuses Usage the fuse between your thumb and Trailer Back-up Integrated Trailer index finger and pull straight out. Lamps Brake Control The vehicle may not be equipped Left Low-Beam Headlamp Washer with all of the fuses and relays shown.
Page 106 10-30 Vehicle Care Fuses Usage Fuses Usage Fuses Usage Key Ignition System, Airbag System Climate Controls Theft Deterrent (Battery) (Ignition) System Instrument Panel Engine Control Windshield Wiper Cluster Module, Secondary Fuel Pump (Ignition) SEO B2 Upfitter Power Take-Off Usage (Battery) Auxiliary Climate Electric Adjustable Control (Ignition),...
Page 107 Vehicle Care 10-31 J-Case Usage Relays Usage Relays Usage Fuses FAN RLY Fan Relay Parking Lamps Electric Running LAMP HDLP Boards Low-Beam Headlamp LO/HID REAR Rear Defogger Heated Windshield DEFOG Washer System Front Fog Lamps LAMP RUN/ Switched Power Four-Wheel Drive CRNK Air Conditioning System...
Page 108 10-32 Vehicle Care NOTES...
Page 109: General Information
Service and Maintenance 11-1 Service and General Information Because of all the different ways people use vehicles, maintenance Maintenance Maintenance intervals, needs vary. The vehicle might need checks, inspections, more frequent checks and services. recommended fluids, and Please read the information under lubricants are necessary to keep Scheduled Maintenance.
Page 110 11-2 Service and Maintenance are driven off-road in the At your General Motors dealer, Scheduled recommended manner, pickup you can be certain that you will Maintenance models only. See Off Road receive the highest level of service Driving in the owner manual. available.
Page 111 Service and Maintenance 11-3 Windshield washer fluid level Fluids visual leak check (or If the engine oil life system is reset check. See Washer Fluid in the every 12 months, whichever accidentally, service the vehicle owner manual. occurs first). A leak in any within 5 000 km/3,000 miles since system must be repaired and the last service.
Page 112 11-4 Service and Maintenance Lubricate the front suspension, Fluids and Lubricants on This is normal. When the steering linkage, rear driveline page 11 8. More frequent amount of ash loading is high, center splines (van models), lubrication may be required see your dealer for DPF and parking brake cable guides.
Page 113 Service and Maintenance 11-5 Tighten connections and Additional Required Services Once a Month fasteners or replace damaged Tire inflation pressures check. At the First 160 km/100 Miles, parts as necessary. This is a See Tire Pressure in the owner 1 600 km/1,000 Miles, and Noise Emission Control Service.
Page 114 11-6 Service and Maintenance Hood and liftgate gas strut Four wheel drive pickup models First Engine Oil Change After support service. Visually inspect only: Transfer case fluid change Every 80 000 km/50,000 Miles gas strut for signs of wear, (extreme duty service) for Engine air cleaner filter corrosion, cracks, loss of vehicles mainly driven off road...
Page 115 Service and Maintenance 11-7 Four wheel drive pickup models First Engine Oil Change After First Engine Oil Change After only: Transfer case fluid change Every 160 000 km/100,000 Miles Every 240 000 km/150,000 Miles (severe service) for vehicles Van Models: Automatic Engine cooling system drain, mainly driven when frequently transmission fluid and filter...
Page 116: Recommended Fluids And Lubricants
11-8 Service and Maintenance Recommended Fluids, Lubricants, and Parts Recommended Fluids and Lubricants Fluids and lubricants identified below by name, part number, or specification can be obtained from your dealer. Usage Fluid/Lubricant Engine oils with the letters CJ-4 are required for your vehicle. The CJ-4 designation can appear either alone or in combination with other American Engine Oil Petroleum Institute (API) designations, such as API CJ-4/SL.
Page 117 Service and Maintenance 11-9 Usage Fluid/Lubricant ® DEXRON -VI Automatic Transmission Fluid. Allison Transmission Only: For areas where ambient temperatures are Automatic Transmission below -40°C (-40°F) use Synthetic Transmission Fluid approved to Allison Transmission specification TES 295 (GM Part No. 12378515, in Canada 88900701).
Page 118 11-10 Service and Maintenance Usage Fluid/Lubricant Pickup Models: Rear Driveline Center Chassis Lubricant (GM Part No. 12377985, in Canada 88901242) or Spline lubricant meeting requirements of NLGI #2, Category LB or GC-LB. Multi-Purpose Lubricant, Superlube (GM Part No. 12346241, in Hood Hinges Canada 10953474).
Page 119: Maintenance Replacement Parts
Service and Maintenance 11-11 Maintenance Replacement Parts Replacement parts identified below by name, part number, or specification can be obtained from your dealer. Part GM Part Number ACDelco Part Number Engine Air Cleaner/Filter Pickup Models 25945274 A3141C Van Models 20815924 A3140C Engine Fuel Filter Pickup Models...
Page 120 11-12 Service and Maintenance Maintenance Records After the scheduled services are performed, record the date, odometer reading, who performed the service, and the type of services performed in the boxes provided. Retain all maintenance receipts. Maintenance Record Odometer Date Serviced By Services Performed Reading...
Page 121 Service and Maintenance 11-13 Maintenance Record (cont.) Odometer Date Serviced By Services Performed Reading...
Page 122 11-14 Service and Maintenance Maintenance Record (cont.) Odometer Date Serviced By Services Performed Reading...
Page 123 Technical Data 12-1 Technical Data Vehicle Data Capacities and Specifications ....12-2 Engine Drive Belt Routing . . . 12-4...
Page 124: Capacities And Specifications
12-2 Technical Data Vehicle Data Capacities and Specifications The following approximate capacities are given in metric and English conversions. See Recommended Fluids and Lubricants on page 11 8 for more information. Capacities Application Metric English Cooling System (Pickup Models) 27.0 L 28.5 qt Cooling System (Van Models) Front Heat or AC Only...
Page 125 Technical Data 12-3 Capacities Application Metric English Transmission Fluid (Pan Removal and Filter Replacement) Auto 6-Speed Transmission Allison 7.0 L 7.4 qt *Do not overfill the (DEF) tank. See Diesel Exhaust Fluid on page 9 12. All quantities are approximate. When adding, be sure to fill to the appropriate level, as recommended in this manual.
Page 126 12-4 Technical Data Engine Drive Belt Routing...
Page 127 INDEX Cold Weather Operation ..9-25 Coolant Accessories and Electrical System Engine ..... . 10-21 Modifications .
Page 128 INDEX Fuel (cont.) Water in Fuel ....9-26 Filter Ignition Transmission Lock What to Use in Canada Diesel Particulate ... . .9-10 Check .
Page 129 INDEX Messages Diesel Exhaust Fluid ..5-11 Parking Scheduled Maintenance ..11-2 Diesel Particulate Filter ..5-12 Brake and P (Park) Service Engine Cooling System .
Page 130 INDEX Towing Wait to Start Light ....5-9 Trailer ......9-35 Warning Light Trailer Towing .

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